问题
完形填空
Doctors strongly recommended that my father ________(take) more exercise regularly instead of sitting still before a computer all day long.
答案
(should) take
考查虚拟语气。句意：医生强烈建议我父亲定期进行体育锻炼而不要整天坐在电脑前。recommend“建议”后接that从句中应该用“(should＋)动词原形”的虚拟语气。